for both analytes. It is important tomention that the same behaviorwas
observed for red and white wines. Thus, all determinations of Cu and Fe
using DLLME and F AAS were performed using standard addition calibration
curve. In this case, the linearity of calibration curves ranged
from 25 to 100 μg L−1 for Cu and from 20 to 80 μg L−1 for Fe. The
limit of detection (LOD) and LOQ of proposed method were calculated
according to Ribani et al. [27]. The LOD and LOQ values were 6.3 and
19 μg L−1 for Cu and 2.4 and 7.2 μg L−1 for Fe, respectively.